billj at harborside.com
Wed Feb 7 16:40:14 EST 2007
Clint L. Novak wrote:
> Hey Bill, how about some pictures or diagrams of the water pump for
>those of us untutored in ad hoc mechanics.
>I understand the concept, but my brain refuses to put it all together.
We took a picture of it with the digital camera last week, but I don't
think the List accepts images. I'll try to get someone to post it at my
website ASAP (I'm all thumbs when it comes to that too).
You can find some material on-line about it. Sometimes it's called a
positive pressure pump, or a Stauffer pump. The only people talking
about it are at Bowjon International (makers of windmills), but their
web pages are less informative than commercially persuasive. It's all
such a secret, but I think their pump may be self-controlling; you just
hook up the air tube (although also $400 with purchase of a windmill,
$800 without). We sized up going their route and it still comes to much
more $$$. Apparently the Stauffer pump gets stuck in the middle of a
cycle if the air runs out, so you need your own "receiver tank" to store
enough air for one cycle.
When our circuit is actually soldered together in its final form, I'll
post a circuit diagram for that at the website, too. It's two
transistors, three relays, one diode, one capacitor, and a few resistors.
S. Oregon coast
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